联合国纪念日
United Nations Observance
International Day of Cooperatives
United Nations Observance
World Population Day
United Nations Observance
World Youth Skills Day
United Nations Observance
Nelson Mandela Day
United Nations Observance
International Chess Day
United Nations Observance
World Drowning Prevention Day
United Nations Observance
World Hepatitis Day
United Nations Observance
International Day of Friendship
United Nations Observance
World Day Against Trafficking in Persons
United Nations Observance
International Day of the World's Indigenous People
United Nations Observance
International Youth Day
United Nations Observance
World Humanitarian Day
United Nations Observance
International Day of Remembrance and Tribute to the Victims of Terrorism
United Nations Observance
International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief
United Nations Observance
International Day for the Remembrance of the Slave Trade and its Abolition
United Nations Observance
International Day against Nuclear Tests
United Nations Observance
International Day of the Victims of Enforced Disappearances
United Nations Observance
International Day for People of African Descent
United Nations Observance
International Day of Charity
United Nations Observance